#include <stdio.h>

int main(void){
    int a,b,c,max;
    printf("Input a,b,c:");
    scanf("%d,%d",&a,&b);
    if(a>b,a>c) max=a;
    if(a<b,c<b) max=b;
    if(c>a,c>b) max=c;
    printf ("max=%d",max);
	return 0;
}